Calculated Industries 4087 User Manual - — 9

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 — 9

g =

paperless Tape (Tape) — Accesses the 

Paperless Tape mode (see paperless Tape 

section), which keeps track of your past 30 entries. 

Useful for checking strings of numbers.

g S

preference Settings (prefs) — Accesses various 

customizable settings, such as dimensional answer 

formats (see preference Settings section).

Machinist function Keys

C

cutting Speed — Enters or calculates Cutting 

Speed. Unitless entries assumed feet per minute 

in U.S. mode; meters per minute in Metric mode. 

Calculates Cutting Speed given entered Diameter 

and RPM (Spindle Speed). Result is displayed as a 

whole number.

g C

radial chip Thinning (rcT) — Enters a Cut 

Depth and calculates a Radial Chip Thinning 

factor to increase the Feed Rate given Feed Per 

Tooth, Tool Diameter and a Cut Depth that is less 

than one-half the Tool Diameter. Unitless entries 

assumed Inches in U.S. mode; millimeters in 

Metric mode.

R

revolutions per Minute — Enters or calculates 

RPM (Spindle Speed). Calculates RPM given 

entered Diameter and Cutting Speed. Result is 

displayed as a whole number.

g R

3-Wire Measurement (3-W Measure) — Enters 

or calculates a Three-Wire Measurement. Unitless 

entries assumed Inches in U.S. mode; millimeters 

in Metric mode. Calculates the minimum and 

maximum Three-Wire Measurements and Pitch  

Diameters given entered Thread Size and Wire 

Size, assuming an External thread type. If a 

Three-Wire Measurement value is entered, the 

Pitch Diameter calculation is based on this entered 

measurement.

(cont’d)